Loom



Sept. 27, 1932.

E. J. WILSON LOOM Filed Dec. 22, 1930 8 woe f or [25/054 .17 W/wzw Patented Sept. 27, 1932 UNITED STATES EZEKIEL J. WILSON, OF EAST GREENBUSH, YORK, ASSIGNOR C. HUYCK 81;

PATENT or-Fiee SONS, 0F ALBANY, NEW YORK, A CORPORATION OF NEW YORK I LOOM Application filed December 22, 1930. Serial No. 504,180.

For a detailed description of the present form of my invention, reference may be had to the following specification and to the acq companying drawing forming a part thereof. In said drawing the figureis a side elevation of a shuttle-operating device constructed in accordance with the invention.

My invention relates to the means for reciprocating the shuttle-of a 100m, whereby greater power may be applied thereto to give the shuttle a wider and swifterrange of play than heretofore, and so provide for larger, wider and speedier looms. By this invention I have overcome'the chief trouble heretofore experienced in the construction and operationof wide, and hitherto, very heavy looms, such as those employed for carpets, cotton duck, felt, etc. By my invention these looms may be from 300 to 700 inches in width and yet of much lighter and,

in other respects, smaller and simpler construction, than those heretofore required for work of such dimensions. My novel loom also involves smaller foundations because of the diminished degree of shock and vibration which accompanies its increase in the force and power applied to the shuttle-throw;

In brief, I'ope'rate the shuttle of the loom separately and independentlyfof the chain of mechanism that works the lay and head mechanism, but still in related'synchronism therewith. By this feature and thesimplification resulting therefrom, I am able to work the pick motion with but twenty-five percent of the total power applied to the loom,

whereas it has heretofore required ashigh as seventyfive percent ofthe total. I pref-- erably employ for such separate operation of the pick motion a pneumatic cylinder acting directly on the picker stick but controlled in time by the strokes of the remainder of the machine.

In the accompanying drawing, the figure is a diagrammatic side elevation illustrating the invention.

7 Referring to the drawing, I represents the lay of a loom along which a shuttle H is to be I eciprocated. This lay can be or any convenient construction and action appropriate to the shuttle. The bobbin H isshown as contained in a conventional bobbin carrier H said bobbin carrier being operated by a picker-stick Gr. Instead, however, of actuating said picker-stick from the mechanical chain 1, or system of gearlng that works the remainder of the loom, I provide a special actuation thereof by means of a pneumatic cylinderC containing a piston D and piston-rod E, which has a slide bearing in both ends-of the cylinder 0. The right-hand end of the piston-rod is linked to the picker-stick G by the toggle-point sweep-stick F.- The suction pipe is provided with a vertical section J which is connected at its lower end to an air pump L which maintains in said pipe an approximate vacuum. The "valve B is norm ally positioned to close the upper end of pipe J and to open the left end of cylinder C to the atmosphere through horizontal pipe K of the suction pipe. The valve B is mounted on the end of a leverB which rides on a shaft A, which is one of the operating shafts for the remained of'the loom and lies along one side thereof." On shaft A is a cam A which, at the proper moment, lifts lever B and the valve B said valve then connecting cylinder 0 to the suction of pump L and closing the upper end of pipe J. Cylinder C is instantly exhaustedon the left of piston D 1 while the atmosphericpressure on the right of that pistondrives it instantly to the left. thereby actuating the picker-stick G and fthrowingthe shuttle I-I across the loom.

Conversely, when'cam A passes out from under lever B, the valve B drops closing suction pipe J' and opening pipe K to the atmosphere. .Thereupon the atmospheric pressure, together with retracting spring N throws the picker-stick G and. the complementary bobbin carrier, into which the bobbin has been thrown, back towards the right, restoring the shuttle to its position shown in the drawing.

This shuttle-throwing apparatus is sepa- 7 rate from the main loom-operating gearing, having only the time-controlling cam A on the shaft A of said gearing, the function of which is only to work valve B and its control-is adjustable according to its position on the circumference of shaft A. The machine as above-described is relieved of the of the prior: art.

sledge-hammer blows now delivered by the picker-ball on the picker-ball shoe to throw the shuttle, as in the usual loom of the present time. A large percentage of the vibration and noise is eliminated. and the heavy structure previously needed to withstand such vibration is not necessary in my novel loom. Its extreme simplicity is obvious, while the practical width is only limitedby' the size of cylinder and piping needed to allow for the. desired quantity of air to be displaced in the proper time. The lighter construction ot the loom and foundations requires less space for a loom of greater capacity. My pneumatic deviceis noiseless as wellassimple and has other great advantages over. the looms of the iWhat I claim as new and desire to secure by Letters Patent,.is:

- 1. In a loom, picker mechanism comprising a pivotally mounted picker stick, means normally acting to move. the picker stick'in .one direction, a cylinder, a reciprocatory piston mounted in said cylinder, means connecting the piston with the picker stick,means for exhausting air from the cylinder on one side of the piston, so asto move the picker stick in the other direction, and means for alternately connecting said cylinder ,with said exhausting means and to the atmosphere. 2-. In a loom, picker mechanism comprising a pivotally mounted picker stick, a, cylinder,

apiston therein, means for periodically eX-' hausti-ng said cylinder at one side of; the piston, so as to move.thepicker in one direction, and other means located exteriorly of the cylinder for moving the pickerstick in the; opposite direction.

3. In a loom, picker mechanism comprising a pivotally mounted picker stick, a cylinatmospheric pressure on one side, means for periodically and alternately exposing the' other side of thepiston to. suction and to the atmosphere so as tov control ,movementsof the picker stick, and means normally acting to move the picker stickin one direction.

4. In a loom, picker mechanism comprising a pivotally mounted Dicker stick, a cylinder, a piston therein connected with. said picker stick, a suction pipe connected with one end of said piston andhaving an onenin to theatmosphere, means for creating a suction in said pipe, a periodically operated valve alternately connecting saidsuction .pipe with said suction means and the atmosphere, and means normally acting on the picker stick to move it in one direction.

5. In a loom,picker mechanismcompri sing a'pivotally mounted picker stick, a cylinder, a; piston therein connected with said picker stick, a suction pipe connected with one end of said piston and having anopen'ing to the den, a piston therein, normally exposed to.

atmosphere, means for creating a suction in said pipe, a valve controlling communication between the suction pipe and the atmosphere, an operating member connected to the valve, means for periodically actuating said operating member so as to alternately operate the valve to place the cylinder in communication with the. atmosphere or the suction means, and means normally acting to move the picker stick in one direction. I I

6. In a loom, picker mechanism comprising a pivotally mounted picker stick, means normally acting to move it in one direction, a cylinder,a piston mounted in said cylinder and connected with said picker stick, a suction pipe connected with. one end of the cylinder and provided with two branches, a valve chamber at the intersection of the branches of the suction pipe and open to the atmosphere, means. for applying a suction to said suction pipe, a valve in said chamber con.- trolling communication between the suction pipe and the atmosphere, and means for periodically actuating said. valve.

7. Ina loom,.picker mechanism comprising a pivotally mounted picker stick, means normally acting to move it in one direction, a pneumatic motor connected with said picker stick. a suction pipe leading from said motor and having an opening tothe atmosphere,

means normally acting tomaintain a constant suction within said pipe, a valve controlling the opening to the atmosphere, and. means for periodically operating said valve.

7 8. In a loom, picker mechanism comprising a pivotally mounted picker stick, means normally acting to move it inione direction, a pneumaticmotor connected with said picker stick, said motor having one side of its piston normally exposed to atmospheric pressure and the other side exposed alternately to atmospheric andsubatmospheric pressure, a cam shaft, and means; operated by said cam shaft for controlling the last mentioned alternate exposure to atmospheric and sub-atmospher c pressure. 9.. In aloom, picker mechanism COIIIPIlSlDQ" a pivotall mounted picker stick, means normally acting to move the picker stick in one direction, a cylinder, a piston therein, a toggle member connecting said piston and said picker stick. mean s for exhausting said cylinder at one side oiithe piston soas to move the picker; stick in opposition to the first mentioned moving means, and means for periodically connecting said cylinder with said exhausting means.

10;. In a loom, picker'mechanism comprising a pivotally mounted picker stick, a spring acting to yieldably move the picker stick in one direction. a cylinder, a reciprocatory piston mounted in said cylinder, a piston rod having a slide bearing in both ends of the cylinder, a toggle member connecting said piston and saidpicker stick, a suction pipe formed of two suctions one of which is connected directly with the cylinder; an air exhausting mechanism connected to the other branch of the suction pipe, a Valve casing connecting said branches of the suction pipeand open to the atmosphere, a valve in said Valve casing controlling communication of the suction pipe to the atmosphere, and means for periodically operating said Valve.

Si ned at Albany, county of Albany, State of New York.

EZEKIEL J. WILSON. 

